Which organism appeared on Earth first?

gastropods

or

horn corals

What are salts and how do they differ from Acids?

What would happen if several salmon in an area were only able to lay 100 eggs instead of what they normally lay. A: The population will most likely die out since most of the eggs are usually eaten and destroyed.

What does the process of diffusion do for the cell? A. moves energy in the cell B. moves oxygen through the cell membrane C. moves water in and out of the cell D. moves proteins through the cell membrane

If a cell has completed the first meiotic division and is just beginning meiosis ii

One property that makes DDT hazardous over the long run is that DDT is

Why can alternative splicing of messenger RNAs (mRNAs) be advantageous for eukaryotic organisms? A-allows exons from two different genes to be spliced into a new mRNAB-increases the variety of proteins that can be producedC-decreases the average

Karen has type 1 diabetes, and she often forgets to administer insulin to herself. why does her breath usually have a fruity odor?

3. In the Phylum Porifera, the highest level of organization is arguably only at the cellular' levél. How have the cnidarians become more complex in terms of organization? What does this mean?

Explain the biological process that enables the roots epidermal cells to do this

Which term describes when individuals leave more offspring than other individuals?